Time (24-hour) Regex Pattern

Live Regex Tester

Pattern Breakdown

Code Examples

const regex = /^([01]\d|2[0-3]):[0-5]\d(:[0-5]\d)?$/;
const test = "23:59:59";
console.log(regex.test(test)); // true

// Extract matches
const matches = test.match(regex);
console.log(matches);

import re

pattern = r'^([01]\d|2[0-3]):[0-5]\d(:[0-5]\d)?$'
test = "23:59:59"
match = re.search(pattern, test)
print(match)  # Found!

package main

import (
    "fmt"
    "regexp"
)

func main() {
    re := regexp.MustCompile(`^([01]\d|2[0-3]):[0-5]\d(:[0-5]\d)?$`)
    fmt.Println(re.MatchString("23:59:59")) // true
}

Common Use Cases

Match Examples

About the Time (24-hour) Regex

Validates 24-hour time format (HH:MM or HH:MM:SS). Hours 00-23, minutes and seconds 00-59.

Regular expressions (regex) are powerful pattern matching tools used across virtually all programming languages. The time (24-hour) pattern is classified as beginner difficulty in the date & time category. It works in all major programming languages.

When using this regex, always consider edge cases and test thoroughly with real-world data. Use the interactive tester above to validate the pattern against your specific inputs before deploying to production.

More Date & Time Patterns